Myself I cant r really see a difference in coin silver and sterling
most any of the jeweler supply retailers carry sterling in plate form .
Santa Fe lists a 1x6 x 10 gage at just under 34.oo
But it should also be noted that all sterling silver is not the same
Traditional sterling is silver and copper . But a whole lot of todays sterling is Argentium sterling
Which is a mix of silver ,copper and metalloid germanium
Both can be re melted . But you need to be able to melt at around 1650 deg for traditional sterling ,in order to reach fluid temp Argentium a little less
Is there a noticeable difference between the to ?
That depends on what your doing with it . But for inlays and such . Myself I don’t see any real differences
Inlays don’t really need to be overly thick unless they are part of some functional item
For just decorations 14 gage is thick enough .
For items that get a lot of use or I need to be able to shape and relieve then I use 10 gage .
Castings are normally way thicker then use requires .
Mostly their thickness is dictated by the casting process though